关键词: 超音速冲压喷气发动机;氢气;超音速燃烧;数值仿真

Abstract: The supersonic combustion of secondary hydrogen flow in a combustor with constant and expanded section area was numerically investigated by solving the compressible Navier-Stokes equations with implicit finite volume methods.The results show that secondary hydrogen can neutralize the problems induced by only one piece of hydrogen which jets into the combustor.It also reveals that because of the heat release due to combustion,the influences of the secondary hydrogen jetting angle,static pressure and static temperature,the flow field changes greatly,thus making the hydrogen and air mixed more fully and easier to burn.

Key words: Supersonic combustion ramjet engine;Hydrogen;Supersonic combustion;Numerical simulation